SAI_VS_SWITCH_TYPE=SAI_VS_SWITCH_TYPE_BCM56850 SAI_VS_HOSTIF_USE_TAP_DEVICE=true SAI_VS_INTERFACE_LANE_MAP_FILE=/usr/share/sonic/hwsku/lanemap.ini SAI_VS_CORE_PORT_INDEX_MAP_FILE=/usr/share/sonic/hwsku/coreportindexmap.ini SAI_VS_INTERFACE_FABRIC_LANE_MAP_FILE=/usr/share/sonic/hwsku/fabriclanemap.ini